Just wanted to post this since I wasn't finding anything online atm about how to fix an issue I was running into when installing PSO2 with the Arks-Layer PSO2 Tweaker. This is for anyone who is still unable to get the game to run after executing the script in their respective PHANTASYSTARNONLINE2_NA folder path.
Like many of you I followed the directions for new installs exactly how they are found on the Arks-Layer website. Unfortunately this did not work for me. After running the script in the PHANTASYSTARONLINE2_NA folder that the Tweaker creates I did not get a message from the Powershell "Good, only found one custom PSO2 install. Press any key."
When you first run the script in your PHANTASYSTARONLINE2_NA folder check the log file that it spits out. Should be named something like "PSO2NA_PSLOG.log." In there it will say at the end of the log
"The PowerScript NOW need to be placed in the Tweaker folder to be able to read the UpdateEngine JSON files."
Put the script in your "PSO2 Tweaker" folder and NOT in any subfolders. Run it there as well. When its done check the log file it spits out. It should say something at the end of the log like "Reboot required." Reboot your PC and then run the script again in the same "PSO2 Tweaker" folder and then it should now complete its thing. The script will end with a message "Good, only found one custom PSO2 install."
You should be able to run the game now from the Tweaker launcher